<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 实例 - 堆叠的进度条</title>
   <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet">
   <script src="/scripts/jquery.min.js"></script>
   <script src="/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<!-- 您甚至可以堆叠多个进度条。把多个进度条放在相同的 .progress 中即可实现堆叠，如下面的实例所示：
 -->

<div class="progress">
   <div class="progress-bar progress-bar-success" role="progressbar" 
      aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" 
      style="width: 40%;">
      <span class="sr-only">40% 完成</span>
   </div>
   <div class="progress-bar progress-bar-info" role="progressbar" 
      aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" 	
      style="width: 30%;">
      <span class="sr-only">30% 完成（信息）</span>
   </div>
   <div class="progress-bar progress-bar-warning" role="progressbar" 
      aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" 	
      style="width: 20%;">
      <span class="sr-only">20% 完成（警告）</span>
   </div>
</div>

</body>
</html>